东南大学学报（英文版）2008，Vol.24Issue(4)：528-531,4.
A/O工艺与分段进水两种生物脱氮工艺的比较研究
Comparative study of two biological nitrogen removal processes:A/O process and step-feeding process
摘要
Abstract
Two biological nitrogen removal processes are compared in the aspect of nitrogen removal, process operation and energy saving. Results show that when the returned sludge ratio is 50% of the inflow rate, the step-feeding process achieves over 80% total nitrogen (TN) removal efficiency, but the TN removal efficiency of the A/O process is only 40%. Moreover, filamentous sludge bulking can be well restrained in the step-feeding process. Given the conditions of a returned sludge ratio of 100% and a nitrifying liquor recycle ratio of 200%, the TN removal efficiency is 78. 32% in the A/O process, but the sludge volume index (SVI) value increases to 143 mL/g. In the step-feeding process, the SVI is only 94. 4 mL/g when the TN removal efficiency reaches 81.1%. The step-feeding process has distinct advantages over the A/O process in the aspects of practicability, nitrogen removal and operating stability.关键词
活性污泥/生物脱氮/A/O工艺/分段进水工艺/效率Key words
activated sludge/biological nitrogen removal/A/O process/step-feeding process/efficiency分类
资源环境引用本文复制引用
祝贵兵,彭永臻,王淑莹,马斌..A/O工艺与分段进水两种生物脱氮工艺的比较研究[J].东南大学学报（英文版）,2008,24(4):528-531,4.基金项目
The Project of Scientific Research Base and Scientific Innovation Platform of Beijing Municipal Education Commission (No. PXM2008 _ 014204 _ 050843), the Project of Beijing Science and Technolo-gy Committee (No. D07050601500000), the Knowledge Innovation Pechnology of the Chinese Academy of Sciences(No.RCEES-QN-200706),the Special Funds for Young Scholars of RCEES,CAS. （No. PXM2008 _ 014204 _ 050843）
